A little side note. I once had a crawfish in a fw
tank. The species I had were supposed to be "safe for fish". Well lets just say there were a few fish that mysteriously disappeared. So one night I turned the lights off, dressed in black, got a flashlight, compass and a map, it was a scene from Rambo minus the machine gun, I could not find one in time. I was off on a mission. To no suprise the crawfish was sitting on the bottom with his claws in the air waiting for the first victim to come too close. Then all of a sudden, snap and he got one. He did not last long in that tank for much longer.